突然冒出来阿尔法，有点蒙

老师好！ In a strategic asset allocation, assets within a specific asset class are least likely to have: A. low paired correlations; B. low correlation with other asset classes; C. similiar risk and return expectations 答案是A。麻烦老师再讲解一下战略资产分配，谢谢！

老师好！ When constructing the optimal portfolios for investors with different risk preferences, the investor with high risk aversion is most likely to have a: A. steeper capital allocation line; B. flatter indiggerence curve; C. lower expected return 答案是C，麻烦老师讲解一下，谢谢！

老师好！题目如下： If investors borrow at a rate exceed the risk-free lending rate, the resulting borrowing portfolio will: A, plot on a flatter line; B, plot on a steeper line; C, no longer plot on a straight line 答案是A，麻烦老师讲解，谢谢！

老师好！题目如下： As one moves to the right along an investor's EF, a set increase in risk is most likely to lead to: A. sequentially larger increases in expected return; B. consistent increases in expected return; C. sequentially smaller increases in expected return. 答案是C，麻烦老师讲解，谢谢！

老师好！题目如下： Risk-averse investors who invest in risk-free assets will have a numerical utility that is: A. same as risk-seeking averse; B. higher than risk-averse investor; C. higher than risk-neutral investor; 答案是A，麻烦老师讲解，谢谢！

老师好！题目如下： Relative to an investor with a steeper indifference curve, the optimal portfolio for an investor with a flatter indifference curve will most likely have: A. a lower level of risk and return; B. a higher level of risk and return; C. the same level of risk and return 答案是B，麻烦老师讲解，谢谢！

老师好！题目如下： The return measure that best allows one to compare asset returns earned over different length time period is the: A. Annualized return B. net Portfolio return C. holding period return 答案是A 麻烦老师讲解，谢谢！

risk-neutral prbabilities是如何计算出来的？图片内容说，与actual probabilities没什么关系？为什么？谢谢！

老师，请问这道题答案中只把每期的700块折现到未来，为什么不折20000？麻烦详细讲解一下谢谢！